Definitions

1. interjection

a sudden, often inarticulate cry or exclamation, typically expressing excitement, pain, or surprise

“The crowd let out a loud ‘rah’ as the home team scored a goal.”

2. noun

a cry or shout, especially one of triumph or celebration

“The rah of the crowd echoed through the stadium.”

3. verb

to express oneself with a loud, inarticulate cry or shout

“The fans rahed as the team won the championship.”